Deep trouble at school.?

[Nick]

The school saw a pic of bud i put up on instagram cause some kid snitched on me. In the pic i put up, i tagged one of my boys and he got called down to the office and he got in a trouble but i didnt. Today i went to school for the first day cause i was absent for monday and tues. they didnt call me down but its sketchy cause he got introuble and was interrogated cause he was tagged and i didnt get in trouble even tho i put the pic up. The snitch gave up my Instagram and my friend who was tagged in a smoking pic got penalized but not me. What should i do in school tomorrow as it being my second day back and why do you think this happened ?